Carbureter.



MEMS@ C. DE LUKACSEVICS L 0.1. mma;

CARBURETER.

APPLlcATxoN man MAY i9, 1915.

Eatnted Aug. 29, NH3.

t l ld .1i-Tilt@ tillldllh@ @litllll CHARLES E LUKACSEVICS AND CLAIR J. TEBIRILL, OF NUTLEY, NEW JERSEY; SAID TERRILL SSIS-NOR TO SAID Dn LUKACSEVICS.

cansunnrnn.

intenses.

Specicaton of Letters latent.

Patented fitug. 2%, i916.,

To all 'whom t 'may concern:

Be it known that we, CHARLES Dn LUK- Aosnvics and CLAIR J. Turrini., citizens of the United States, residing at Nutley, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Carbureters, of which the followin is a speciiication.

llhe present invention relates to carbureters, and particularly to that type of carbureter used in connection with internal combustion engines.

The objects ort the invention are, iirst, to produce a better mixture oit the gas-vapor and air which results in better combustion; second, to produce a carbureter in which the gasolene is not atomized but given oii' Ato the mixing chamber in a gaseous form free of unvaporized liquids; and third, to produce a carbureter of novel and simple construction which will-be eiiicient in operation.

With the above objects in view, the invention consists in certain novel features of a carbureter having a fuel chamber, an air passage in direct communication with the motor suction tube and a separating wall between the said chamber and passage which includes an absorbent element of felt or-lilre material, eXposedto and saturated with the gasolene in the iuel. chamber, and subject to the suction set up in the air pas sage incident to the action of the engine vtiii A parte throughout the whereby gasolene will be given oil' as vapor to the air induced through the air passage. A further feature of the invention is the provision of an improved valve in eo-action with the wall which separates the fuel chamber from the air passage for regulating the quantum of the gas delivered into the air passage; and a novel relation between the said valve and a valve for controlling the air suppl57 to the said passage, whereby the ingredients of the combustible mixture are automatically and properly proportioned. I An embodiment ofc' the invention is illustrated in the accompanying drawings, wherein :M l

Figure 1 is a plan view of one embodiment of the invention; Fig. 2 is a vertical sectional. view taken on line 22 of- Fig. 1.

Like reference characters denote like drawings.

A denotesa casting providing the gasoiene cruel chamber 1, and the purifying specication and chamber 2 at one side of the chamber 1 and separated from the latter by the angular partition 3 having an opening 4; therein for the passage of gasolene into the chamber 1. rl'he .chamber 2 is provided with the inlet opening 5 having suitable connection with the gasolene tank, not shown, and is further provided with a screen or filtering means 6, supported upon the shoulder 7 in the chamber 2, for straining or purifying the gasolene ot foreign matter which is apt to interfere with the proper operation ol: the parts of the carbureter and engine. A needle valve 8 coperating with the opening l as a seat, is provided to control the flow of the gasolene from the purifying chamber 2 to the chamber 1. The needle valve 8 ispro-` vided with the stem 9 slidably extended into the guide-way or cap 10 threaded in or `otherwise removably secured to the castingr A.

lhe gasolene chamber 1 is provided with a removable biittom 11 in threaded engagement therewith. The bottom 11 is formed with an annular rib 12 which deiines a central opening. and has its outer Yface 13 fashioned as a valve seat. ylhe rib 12 provides a ledge lll which supports co-extensive and concentric tubular members 15 and 16. A cylinder 17 of absorbent material is coniined by and between the members 15 and 16. rlhe member 1G forms the Wall of an air passage 20 ,which extends centrally' through the carbureter and has its inlet at 'the valve seat 13; and the member 15 forms the inner wal-l of the chamber 1, said chamber being concentric to said air passage. The member 15 is formed near its lower end wth an annular row of apertures 18 through which. the material 17 is exposed to the gasolene. The member 16 is provided with a plurality oi perforations which are preferably spirally arranged and through which the gasolene is given off from the felt 1'?, in gaseous form, to the air drawn through the central air pas sage in consequence of the suction produced by the engine. The member 16 has a dared lower end which fits in an annular recess 21 formed in the bottom 11 andis frictionallyA retained in Isaid recess by virtue of its own resiliency. l

A. cylindrical valve 22 is in slidable en gagement with the inner face of the member 16 and is operative to cover or expose the perfcrations 19 and to thereby regulate the lll@ j, valve'29 is slidably mounted on the rod 23,'

2-1 and 25 to -an inclosed operating rod 23 having a threaded lower end 2.6 upon which a conical air valve 29, for coperation with the seat 13, is retained b` nuts 27 and 28.

. The rod 23 isl actuated. from the shaft 35 through thearm 36 and connecting link 37, and operates the valves 22 and 29 in unison, whereby the gas and air are properly and automatically proportioned for any quantum of fuel mixture within the capacity of the carbureter.

The valve 29 comprises al section 29a forming the valve face and slidable upon the rod 23. A spring 30 surrounds the rod 23 and bears against the nut 28, exerting tension upon the valve section 29a, the upward nievement of which is limited by the nut 27. The valve face or section 29a has a back or reinforcing section 29b in suitable engagement therewith. It is to'be understood that the nuts 27 and 28 are adjustable upon the threaded portion 26 of the rod, thereby permitting any desired adjustment of the air valve 29; the purpose of this construction of the valve being presently set forth:

Fig.'1 illustratesthe carbureter withits parts in inoperative relation, the perforations 19 being closed, while 'the valve 29 is so adjusted as to permit a slight inflow of air into the passage 20. For priming, or when it is desired to start the engine not shown, the rod 23 is operated to close the valve 29 firmly upon its seat 12, and to raise the sleeve 22 until it uncovers the lower-most row of openings 33', thus cutting off all air supply to the passage 20, and allowing a charge of pure gaseous vapor to be carried to the engine. It will be seen that since the the' spring 28- will compensate for any increased upward movement of the rod 23 and firmly seat the valve 20 upon the valve'seat- 12. However, under normal running condi- Itions,` the sleeve 29 is operated to admit air `to the 'passage 20 and the sleeve valve 22 is operated as to uncover the perfor-ations 19. `In many of the carbureters heretoforeconstructed wherein atomizing and spraying means are employed for vaporizing liquid fuel, a certain quantity of the liquid fuel passes into the machine unvaporized and the moisture -incident to this unvaporized liquid causes an imperfect and delayed co1nbastion, as well as producing carbon in the engine cylinder. It will be obvious from the above construction that applicants overn come this disadvantage by providing means for absorbing the liquid fuel and which gives the fuel off and permits the same to evaporate therefrom in a gaseous form free of liquid and moisture. The vapor-ized gas thus obtained, also, admits of a better mechanical mixing with the air.

1,1ee,eee

A mixing 'chamber 39 is provided for the carbureter and comprises a hollow member of a gradually increasing diameter, having an annular langeprojecting laterally therefrom intermediate its ends provided upon its edges with a threaded portion. When kvthe carbureter is assembled, the reduced end of the mixing chamber 39 is inserted and lies between the upper or innerextremities of the tubular members 15 and 16,v while the annular flange Ll0 which provides a top or cover for the chamber 1 is threaded upon the upper e O`e of said chamber. An annular float l is pivotally disposed in the chamber 1 an surrounds the tubular member 15. Extending rearwardly of the pivot 42 of the float lis the spherical projection 43 adapted to engage a reduced portion 'in the needle valve stem 9. Thus, it will be seen that upon the rise and fall of the float 42 the needle valve 8 will be' operated to open and close the opening 4i in the partition 3 and control the supply of liquid fuel to the chamber 1. The chambers 1 and 2 are formed with drain outlets 1n and 2, respectively, which are adapted to be closed by a screw-threaded plug or other suitable means.

The chamber 2 is also provided with a screw cap 2b which permits the insertion and removal of the screen or filtering member 5. It will also be obvious that upon removing bottom l1 of the chamber 1, the absorbent material disposed between the tubular mem bers 15 and 1G may be replaced, when occasion requires, and access to the sleeve valve 22 and air valve 29 may be had.

An air duct 31 is suitably attached to the bottom 11 for directing air to the air inlet 12. The air duct 31 is provided with a plurality of supplemental air inlets 32- controlled by the manually operated ring 33. 'lhe lower end of the 'rod extends into the wall of the air duct 31, as shown at 34,

`which thus provides an additional guiding means for the rod.

What is claimed is 1. A carburcter having a fuel chamber, a central air passage to which the fuel chamber is concentric, a wall scp-.n.ating the fuel chamber and the air passage throughout their extent and including a felt absorbent clement projecting toward the base of said fuel lchamber and means for retaining said absorbent element in position, constructed to expose said' element at one side thereof to the gasolene in said fuel chamber and at the other side to the air flowing through said passage, said passage having' an annular air inlet at one end and being open to thc motor suction tube at its other end, a cylindrical valve working within said passage and along the inner l'ace if-said wall and operative to regulate the degree to which the absorbent element is exposed to the air, and a second valve connected to said lvI5 `feylmcirical valve for ymovement therewith and the-base et said fuel chambenand and controllin the saidannular air inlet, 'formed 4with perforations at intervals the connection etween said valves including` Vthron hout their extent, and a cylinder of 'aresilent element for permitting a moveabsor nt `material arranged betweensald '.5 `nient of said cylindrical valve in a direction tubularmmbers and between said annular 20y 'away from said inlet, while the second valve part and the base of said fuel chamber.

is held closed on its seat. -Inr -testmon whereof wel have heremto 2. A carbureter having a fuel chamber, a set our handeln presence of Vtwo Subecribing cover therefor, a lcentral air passage to witnesses.

I'Owhich the fuel chamber is concentric, and f .an annular wall separating thefuel chamy CEAKRS'CSEVICS' her and air passage throughout their extent [f v; and comprising an annular part formed Witnesses: c `with said cover, concentric tubular mem Gmo. O. Terran I5 bers extending betweennaid` annular part Rosanna S." 

